Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Plastics & Elastomers Functions
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
Applications & Uses
- Applications
- Plastics & Elastomers End Uses
- Plastics & Elastomers Processing Methods
Properties
- Color
- Physical Properties
- Shrinkage
- Processing Information (Injection Molding)
- Note
- Sumika Polymers cannot warrant the shrinkage values.
- The Srinkage test results are based on 110 x 80 x 3 mm plaques, edge gated, 2.4 mm thick gate.
| Value | Units | Test Method / Conditions | |
| Melt Flow Rate | 120.0 | g/10 min | ISO 1133 |
| Density | 0.9 | g/cc | ISO 1183 |
| Flexural Modulus (2mm/min) | 1850.0 | MPa | ISO 178 |
| Tensile Strength at Yield (50mm/min) | 36.0 | MPa | ISO 527 |
| Notched Izod Impact Strength (at 23°C) | 1.7 | kJ/m² | ISO 180 |
| Heat Deflection Temperature (0.45 MPa) | 120.0 | °C | ISO 75 |
| Rockwell Hardness | 100.0 | R Scale | ISO 2039 |
| Value | Units | Test Method / Conditions | |
| Conditioning after Molding (at 23°C) | 48.0 | hour | — |
| Shrinkage | 1.3 - 1.6 | % | — |
| Value | Units | Test Method / Conditions | |
| Rear Temperature | 145 - 200 | °C | — |
| Middle, Front, and Nozzle Temperature | 210 - 235 | °C | — |
| Mold Temperature | 23 - 50 | °C | — |
| Shot Size | 50 - 70 | % | — |
| Screw Speed | 30 - 60 | % | — |
| Back Pressure | 50 - 150 | psi | — |
| Stock Temperature | 191- 246 | °C | — |
Technical Details & Test Data
- Injection Molding Processing Recommendations
- To achieve good dispersion of color concentrate it is recommended to use either a screw that has a mixing zone or a mixing nozzle.
- Maximize first stage injection pressure and rate.
- Minimize the packing pressure.
Considerations: The above conditions are general recommendations Specific applications may require conditions outside of the given ranges Melt temperatures above 260°C) may cause resin degradation and changes to resin properties For additional assistance, contact your Sumika Polymers injection molding technical service representative
- Critical Note
Shrinkage Factors
- The shrinkage values provided in the table below were obtained in a laboratory setting with simple plaques and are reported as nominal values. They should be considered as estimated values only since resin shrinkage is influenced by several factors.
- The most common influencing factors include resin characteristics, part geometry, mold design, molding conditions, part temperature upon ejection from the mold and part cooling afterwards. Consequently, the values given below cannot be used as absolute.
Determining Shrinkage
- Since shrinkage is affected by so many factors, it is the user’s responsibility to confirm the shrinkage for their own mold design and molding conditions before cutting tool steel. For the user to determine shrinkage, the suggested procedure is to finish only one core and cavity using these estimated values (staying steel safe). Based on the measurements of parts from this single core/cavity combination, the shrinkage factor can then be adjusted to fit the particular situation .
- A second iteration of mold changes (and costs) should be considered and applied after initial shrinkage factors are determined. If a similar tool is already present, run the material on this tool with normal process and handling conditions and determine the shrinkage. Remember to wait a full 72 hours for maximum shrinkage. Also, be aware the heat aging after molding can affect shrinkage.